# Using Nginx as an injection proxy **URL:** \ **Category:** NGINX\ **Created:** [January 21, 2011, 5:46pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102 "2011-01-21T17:46:12Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [January 21, 2011, 5:46pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102/1 "2011-01-21T17:46:12Z")
Hi, I’d like to know whether it is possible to use Nginx as an injection proxy (for 100% legal and professionnal use ! 🙂 ), notably to analyse the headers or content of a response, and perform automated changes on either or both the headers/content of the request, or change some parts of a request. Practically, I want to do exactly the same kind of things that Fiddler 2 allows to do : perform tests on header/content, and automatically make changes. Bye, Yann Posted at Nginx Forum: > **[Using Nginx as an injection proxy](https://forum.nginx.org/read.php?2,168299,168299#msg-168299)** > > Hi, I'd like to know whether it is possible to use Nginx as an injection proxy (for 100% legal and professionnal use ! :) ), notably to analyse the headers or content of a response, and perform automated changes on either or both the headers/content... ---
**Author:** ![yannlossouarn](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/97f17d/32.png) [@yannlossouarn](https://www.ruby-forum.com/u/yannlossouarn)\ **Post date:** [February 14, 2011, 12:29pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102/2 "2011-02-14T12:29:36Z")
up 🙂 Posted at Nginx Forum: > **[Re: Using Nginx as an injection proxy](https://forum.nginx.org/read.php?2,168299,174974#msg-174974)** > > Hi, I'd like to know whether it is possible to use Nginx as an injection proxy (for 100% legal and professionnal use ! :) ), notably to analyse the headers or content of a response, and perform automated changes on either or both the headers/content... ---
**Author:** ![yannlossouarn](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/97f17d/32.png) [@yannlossouarn](https://www.ruby-forum.com/u/yannlossouarn)\ **Post date:** [February 14, 2011, 1:41pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102/3 "2011-02-14T13:41:52Z")
On 21.01.2011, at 19:44, yannlossouarn wrote: > Fiddler 2 > allows to do : perform tests on header/content, and automatically make > changes. It’s not possible. – Igor S. > **[Igor Sysoev](http://sysoev.ru/en/)** ---
**Author:** ![yannlossouarn](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/97f17d/32.png) [@yannlossouarn](https://www.ruby-forum.com/u/yannlossouarn)\ **Post date:** [February 14, 2011, 4:38pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102/4 "2011-02-14T16:38:05Z")
Hi Igor, Oh I see : if you tel it’s not possible, I guess it is really not possible at all… ^^ Just for the sake of my mind, I’d be interested in complementary information : I was just studying nginx documentation, and had the feeling there may be something possible, by using simultaneously the rewrite, proxy and substitution modules. Where is the issue ? 😕 Bye and thanks for the great work ! Yann Posted at Nginx Forum: > **[Re: Using Nginx as an injection proxy](https://forum.nginx.org/read.php?2,168299,175031#msg-175031)** > > Hi, I'd like to know whether it is possible to use Nginx as an injection proxy (for 100% legal and professionnal use ! :) ), notably to analyse the headers or content of a response, and perform automated changes on either or both the headers/content... ---
**Author:** ![yannlossouarn](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/97f17d/32.png) [@yannlossouarn](https://www.ruby-forum.com/u/yannlossouarn)\ **Post date:** [February 14, 2011, 5:51pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102/5 "2011-02-14T17:51:59Z")
@SplitIce : basically, I’d prefer to avoid using another language/module : I have not complete freedom over server setup. LUA is not installed on current setup, and I think sysadmins might be reluctant to installing the LUA module just for me. 😕 Would Rewrite+ Proxy + Substitution(s) make it, if I slightly modify my demand, so that I do not make “tests on header/content” before making changes. E.g., the aim would be to make requests on [http://mysubdomain.mydomain.net](http://mysubdomain.mydomain.net) get data on [http://somewhere.else.net](http://somewhere.else.net), changing the response body so that links to “[http://somewhere.else.net/foo.bar.html](http://somewhere.else.net/foo.bar.html)” are changed into “[http://mysubdomain.mydomain.net/tutu.html](http://mysubdomain.mydomain.net/tutu.html)”, plus other similar changes in the html source code ? Thanks, Yann Posted at Nginx Forum: > **[Re: Using Nginx as an injection proxy](https://forum.nginx.org/read.php?2,168299,175061#msg-175061)** > > Hi, I'd like to know whether it is possible to use Nginx as an injection proxy (for 100% legal and professionnal use ! :) ), notably to analyse the headers or content of a response, and perform automated changes on either or both the headers/content... ---
**Author:** ![yannlossouarn](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/97f17d/32.png) [@yannlossouarn](https://www.ruby-forum.com/u/yannlossouarn)\ **Post date:** [February 14, 2011, 4:46pm UTC](https://www.ruby-forum.com/t/using-nginx-as-an-injection-proxy/202102/6 "2011-02-14T16:46:50Z")
You could do it using embedded perl or LUA probably.